Example: RxSwift.

Package.swift

@@ -12,13 +12,12 @@ let package = Package(
         )
     ],
     dependencies: [
-        //example:
-        // .package(url: "https://github.com/ReactiveX/RxSwift.git", "4.0.0" ..< "5.0.0")
+         .package(url: "https://github.com/ReactiveX/RxSwift.git", "4.0.0" ..< "5.0.0")
     ],
     targets: [
         .target(
             name: "STSLibrary",
-            dependencies: []),
+            dependencies: ["RxSwift"]),
         .target(
             name: "STSApplication",
             dependencies: ["STSLibrary"]),

Sources/STSLibrary/Application.swift

@@ -7,5 +7,7 @@ public final class Application {
 
     public func run() throws {
         print("\(prefix): \(TensorFlowExample.multiplyTensor())")
+        print("\(prefix): Running RxExample:")
+        RxExample.printHello()
     }
 }

Sources/STSLibrary/RxExample.swift

@@ -0,0 +1,19 @@
+
+import RxSwift
+import Foundation
+
+struct RxExample {
+    static func printHello() {
+        let wordList = ["Hello", "Rx", "World"]
+
+        _ = Observable<Int>.interval(1, scheduler: SerialDispatchQueueScheduler(qos: .default))
+            .take(wordList.count)
+            .map { index in wordList[index]}
+            .do(onNext: { word in
+                print(word)
+            })
+
+        // sleep for the duration of the above so the application doesn't exit before completion
+        Thread.sleep(forTimeInterval: Double(wordList.count))
+    }
+}